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  1. A speed of 22.5 m/sec. is the same as ?
    1. 40.5 km/hr.
    2. 81 km/hr.
    3. 36.8 km/hr .
    4. 72 km/hr.
Correct Option: B

Speed in km/hr = speed in m/sec x (18 / 5 )
Speed in km/hr = (22.5 x 18 /5 ) km/hr
= 81 km/hr.


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